Abiotic factors are the non-living things like temperature, soils conditions, water, etc. of a particular area that determine the kind of life surviving there. The article discusses these abiotic factors and how they affect living organisms. slide 1 of 8.
Also, it is rare, but if you are wearing socks for a long amount of time, and they start to itch, it may mean fuzzies from the socks are embedding in the creases in your feet, which cause the tiny pores in the creases of your feet to not be able to keep airing out.
If you're feeling pain on the bottom of your foot near your heel, pain after exercise or activity, or pain first thing in the morning or after a long period of sitting, then you may have a heel spur. Heel spurs don't have a magic cure, but you can take steps to ease the pain and to eventually get rid of them.